PopBucket reveals the 10-20 hour questline as part of the upcoming Dawnguard add-on. Though the new quest may not be as vast as The Shivering Isles in Oblivion, we still think this looks like a sizeable chunk of DLC and more importantly, MSPs well spent.
while im excited to play dawnguard i was hoping for more of an EXPANSION not dlc i want something massive i hope the next "dlc" as they are calling it will let you travel to an area out of skyrim
EDIT: id like to also add the fact that bethesda states its about the same length as a faction quest is quite bothering considering the companions was the shortest the mages guild was boring the only enjoyable one was the thieves guild (note i have yet to play as the brotherhood)
Fast paced, aim assist, no thought process required and will buy every release because of the name. There's a certain kind of people that will play this game and luckily for Activision there's a whole lot of "those" people.